US 1873294 A
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Description (OCR text may contain errors)
Aug. 23, 1932.
' J. T. cosGRovE" FULLER Filed May 4. 1931 R) m m m 7/7 Z'Cbgrrame. BY
Patented Aug. 23, 1932- JOHN '1. COBGROVE, OI KANSAS Gm, MISSOURI FULLER Application and m 4, 1931. Serial a... 585,016.
This invention relates to tools, and particularly apparatus adapted for usein connectlon' with imparting an instantaneous impelling An even furtherobject of this invention is I the contemplation of a puller having a novel combination of parts which coact to form an effective tool which might be utilized in connection with imparting a force to most any kind'of work.
Minor objects of the invention will appear during the course of the detailed specification, referring to the accompanying drawing,
Figure 1 is a side elevation of a tool in the form of an axle puller embodying the present invention.
Fig. 2 is a perspective view of the same, on an enlarged scale, and with the slidable weight entirely removed from the apparatus.
Fig. 3 is a still further enlarged vertical, fragmentary, sectional view through the removable head of the puller and showing the same associated with an axle.
Fig. 4 is a vertical cross section through the rod, taken on line IV-IV of Fig. 1, and,
Fig. 5' is a perspective view of a modified form of rod which might be utilized when using the tool for purposes other than pulling an axle. I
Figs. 1 to 4 inclusive of the drawing illustrate a puller constructed in accordance with the preferred form of the invention. A tool embodying the features contemplated is well adapted for use when it is desired to dislodge an.axle. Since the necessary force cannot be imparted to this automobile art through the ordinary means, it is advisa 1e always to employ apparatus as illustrated.
Like reference characters designate similar parts in Figs. 1 to 4 inclusive, and the nu meral 8 designates a novelly constructed head, the wall 10 of which is formed to present a wedge-shaped notch 12 Which engages the work as hereinafter set down. Wall 10 connects sides 14 of the U-shaped portion of head 8 and the base of this portion, indicated by the numeral 16,.is provided with a hole 18 therethrough to receive one end of rod 20. This end of rod 20 is threaded as at 22 to receive nut 24, after rod 20 has been passed through hole 18. The opposite end of rod 20 has formed thereon a stop 26 and a weight I 28 is slidably supported by rod 20 between head 8 and st p 26.
Weight 28 has enlarged ends 30 to directly engage stop 26 and base 16 of head 8 to stop its movement along rod 20. A longitudinal bore 31 is cast through weight 28 which slips over rod 20 when the apparatus is assembled. In practice, notch 12 fits over the work to be engaged and where the puller is used in connection with an axle 32, notch 12 fits over the glreaded portion 34 thereof andbehind nut In practice, also, it is necessary to remove the wheel of the automobile before the puller is attached to axle 32. After the wheel-removing operation, nut 36 is replaced and moved far enough along'threaded portion 34 to insure a positive grip and yet preclude stripping. 7
It is important that wall 10 be of material which springs sufiiciently to keep the head from breaking when weight 28 is moved along rod 20 against stop 26 in the direction of the arrow shown in Fig. 1. In the manufacture of head 8, this wall 10 may be welded to sides 14 or otherwise aflixed after notch 12 is cut and the material forming wall 10 is treated as desired. I
The modified showing of a part of this apparatus illustrated in Fig. 5 rendersclear a manner in which the puller might be used for purposes other than an axle puller. In this instance rod has a stop 102 rigid with one end thereof, while a hook 114 is formed at the opposite end of rod- 100. In this showing there is no Weight mounted upon rod 100, but the combination illustrated in ill Fig. 1 is precisely the same and further comment is unnecessary.
The operation of this pulling apparatus, while made clear during the fore oing specification, might be emphasized y stating that an enormous force is applied to axle 32 lon itudinalliy thereof, when weight 28 is rapidly move against stop 26. The sudden ]erk is imparted directly to axle 32 and since notch 12 is in longitudinal alinement with rod 20, there are no lateral strains to break a direct force. The varying width of notch 12 obviously permits head 8 to en age axles of Variousdiameter and while the orm of head 8 illustrated is preferred, it must be understood that modifications as to specific structure might be made without altering the effectiveness of the puller. I
Having thus described the invention, what is claimed as new and desired to be secured by Letters Patent is:
1. A puller comprising a rod; a weight slidably supported thereby; and a head formed on each end respectively of said rod; one of said heads formed to engage the work and including a U-shaped body, said rod slidably and rotatably engaging the base of said body, and a notched wall extending between the ends of said U-shaped body, said notch being in longitudinal alignment with said rod, said notched wall being resilient, whereby to flex and absorb destructive shocks when the puller is in use.
2. A puller comprising a rod; a stop integral with the red at one end thereof; a threaded portion at the other end of said rod; a U shaped body having a hole through the base thereof, said rod slidably engaging said body by passin through said hole whereby to project the t readed portion between the sides of said U-shaped body; a nut on the threaded portion of said rod to limit the sliding movement thereof in one direction; a weight slidably supported by the rod intermediate the head and U-shaped body; and a work engaging wall joining the ends ofsaid body sides said wall being resilient and adapted to flex to absorb destructive shocks when the puller is being operated.
3. A puller comprising arod; a stop inengaging wall joinin the ends of said U- signature. I,
JOHN T. f COSGROVE.
tegral with the rod at one end thereof; a
threaded portion at the other end of said rod; a nut on the threaded portionof said' rod; a weight slidably carried by the rod intermediate the stop and nut; and a workengaging head mounted on the rod at the threaded end thereof, said head having a U- shaped body having walls of uniform thickness throughout, a hole formed through the base of said body of a diameter greater than the diameter of said rod, the rod passing through said hole to project the said nut within the walls'of said body whereby to per:
mit free rotation without longitudinal movement along the rod, and a resilient work-